At a building site, a 3-m-thick clay layer is overlain by a stratum of sand and bounded on the bottom by rock. Calculations indicate that foundation settlement due to primary compression (consolidation) will be 40 mm. The coefficient of consolidation for the clay is 0.055 m2/month.(a) Determine the time period for 90 percent of the primary compression settlement to occur.(b) Indicate the settlement expected one year after construction.

Q: In a site investigation for a large foundation project it is determined that there is a clay layer…

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Q: How long will it take for 50% of the total settlement to occur in laboratory specimen of the clay…

A: Degree of consolidation = U= 50%Cv= 0.25m²/dayDiameter of specimen = 6.35cmH= 2.54cm

Q: A 5.1 m thick clay soil with a current overburden pressure of 89 kPa is going to experience an…

A: The thickness of the clay layer, H = 5.1m Initial stress, σin= 89kPa Additional stress, ∆σ =89 kPa…

Q: Table 2 shows the soil profile and the relevant soil parameters and the loading parameters.…

A: Introduction : Elastic settlement occurs as a result of a change in shape at a constant volume, such…

Q: A buried saturated clay layer 8 ft thick is bounded on top by a layer of granular soil having a high…

A: The given data is shown below:

Q: Given that B =1 m, L = 3 m, and Q = 110 kN, the soil characteristics given in the figure are Cs =…

A: Given - Given that B =1 m, L = 3 m, and Q = 110 kN, the soil characteristics given in the figure are…

Q: noedometer (consolidation) test is performed on a normally consolidated clay stratum that is 8 et…

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Q: A 10 m thick clay layer overlying an impermeable rock is consolidated under an overburden pressure…

A: H = 10 m  = 500 kPa = 300 kPa

Q: If the OCR of the clay layer is 2.5 instead, and w = 38%, estimate the primary consolidation…

A: According to given data  Given: Void Ratio (e) = 0.76Water Content (w) = 34%OCR (Cc) = 2.5Vertical…

Q: 4. (a) Time required for a 3m clay layer, sitting on bedrock, and overlain by a sand layer to fully…

A: Time required for consolidation settlement, t = Tv d2/Cv Where, Tv = Non-dimensional time factor d =…

Q: Question attached

A: Secondary consolidation: The reduction in volume continues at a very slow rate even after the excess…

Q: Problem 4: A building is to be constructed on a 6 m thick stratum of the clay for which…

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Q: A 12 ft. sandy fill is to be added to the saturated clay site shown below. The moist unit weight of…

A: Before loadingσ'=112.4-62.4×10=500 lb/ft2After loadingσ'=500+115×12=1880 lb/ft2σc'=1000 lb/ft2

Q: 2) A rectangular (5ft by 8ft) foundation will be built on the soil profile shown in the figure.…

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Q: For soil profile shown in Figure below. If the clay is normally consolidated, a) Estimate the…

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Q: 3. There is a rectangular foundation, foundation soil stratification, self-weight stress and…

A: The compressibility index is used to determine the value of soil compressibility through which we…

Consolidation parameters

Consolidation is the process of expulsion of pore water present in the voids of soil solids under the pressure of the applied load. This is a quick process in the case of coarse-grained soils since the permeability is high due to the presence of more voids, while it is a slow and gradual process in the case of clayey soil as the permeability of clay is less. An example of consolidation is the settlement of soil under a building due to the load coming from the building.